This is a fantastic cutter when used properly. It seems quite brittle so I would never cut it deeper than a few millimeters or cut too fast with it. But by making shallow cuts and slowly working from a template, I can make indentations for the guitar's lighted truss rod caps. It cuts so cleanly and thoroughly that it leaves a lustrous finish on the wood I've used it with. It cuts through maple, mahogany and cherry with no problem.